US7193572B2 - Roof antenna for motor vehicles - Google Patents

Roof antenna for motor vehicles Download PDF

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Publication number
US7193572B2
US7193572B2 US10/499,363 US49936304A US7193572B2 US 7193572 B2 US7193572 B2 US 7193572B2 US 49936304 A US49936304 A US 49936304A US 7193572 B2 US7193572 B2 US 7193572B2
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US
United States
Prior art keywords
antenna
printed circuit
circuit board
arrangement
antenna element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US10/499,363
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English (en)
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US20050062658A1 (en
Inventor
Christian Magg
Peter Karl Prassmayer
Frank Mierke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aumovio Advanced Antenna GmbH
Original Assignee
Kathrein Werke KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Application filed by Kathrein Werke KG filed Critical Kathrein Werke KG
Assigned to KATHREIN-WERKE KG reassignment KATHREIN-WERKE KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: MAGG, CHRISTIAN, MIERKE, FRANK, PRASSMAYER, PETER KARL
Publication of US20050062658A1 publication Critical patent/US20050062658A1/en
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Publication of US7193572B2 publication Critical patent/US7193572B2/en
Assigned to COMMERZBANK AKTIENGESELLSCHAFT, AS SECURITY AGENT reassignment COMMERZBANK AKTIENGESELLSCHAFT, AS SECURITY AGENT CONFIRMATION OF GRANT OF SECURITY INTEREST IN U.S. INTELLECTUAL PROPERTY Assignors: KATHREIN SE (SUCCESSOR BY MERGER TO KATHREIN-WERKE KG)
Assigned to KATHREIN SE reassignment KATHREIN SE MERGER AND CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: KATHREIN SE, KATHREIN-WERKE KG
Assigned to KATHREIN AUTOMOTIVE GMBH reassignment KATHREIN AUTOMOTIVE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KATHREIN SE
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1207—Supports; Mounting means for fastening a rigid aerial element
    • H01Q1/1214—Supports; Mounting means for fastening a rigid aerial element through a wall
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1271—Supports; Mounting means for mounting on windscreens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/32—Adaptation for use in or on road or rail vehicles
    • H01Q1/325—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle
    • H01Q1/3275—Adaptation for use in or on road or rail vehicles characterised by the location of the antenna on the vehicle mounted on a horizontal surface of the vehicle, e.g. on roof, hood, trunk
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/30—Arrangements for providing operation on different wavebands
    • H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
    • H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
    • H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements

Definitions

  • the technology herein relates to antenna arrangements.
  • An antenna arrangement has been disclosed, for example, in DE 201 11 229 U 1.
  • This prior publication describes an antenna arrangement for motor vehicles which has a chassis.
  • a printed circuit board is arranged above the chassis in order to accommodate circuit components.
  • One or more vertically projecting antenna elements which is or are at least partially flat, is or are provided vertically with respect to the printed circuit board.
  • the printed circuit board is aligned essentially horizontally to receive different services or for different frequencies in the mobile radio band.
  • a shroud which may have a shape similar to a fin.
  • Antennas such as these are normally fitted to the motor vehicle bodywork plate, for example at the junction between the motor vehicle roof and the rear windshield.
  • a multiple frequency antenna arrangement in particular for motor vehicles having a corresponding shroud has been disclosed in EP 0 862 239 A1.
  • two printed circuit boards which are aligned vertically and are offset laterally transversely with respect to the vertical plane are provided in the housing, which is in the form of a shroud, for accommodation of the electronic components.
  • a connecting adapter is provided at the upper end of the housing, that is to say at the uppermost point of the shroud, in order to make it possible to attach an antenna in the form of a whip antenna there.
  • An antenna which can preferably be used for cars has likewise been disclosed in DE 694 19 080 C2.
  • This antenna also has a housing in the form of a shroud, at whose uppermost projection point a connecting point is provided for a whip antenna.
  • One or more printed circuit board elements which are aligned vertically or horizontally, can be arranged within the antenna housing.
  • these printed circuit board elements are likewise arranged parallel to one another and are arranged alongside one another transversely with respect to the plane of the printed circuit board, to be precise aligned transversely with respect to the vehicle longitudinal axis.
  • they may also likewise be arranged with a lateral offset parallel to one another, to be precise aligned longitudinally with respect to the vehicle axis.
  • antenna arrangements are also known in which the printed circuit board is provided with electronic circuitry components, filter circuits etc. formed on a more or less horizontal chassis.
  • the antenna elements are once again positioned vertically at right angles to this, in the vertical direction.
  • These antenna elements may, for example, not only be composed of metallically conductive self-supporting antenna element devices but, for example, may likewise once again be formed from a printed circuit board element, that is to say in general from a dielectric material, on which metalized surfaces are provided in order to form the antenna elements.
  • the aim is now to receive in only one frequency band range, then one antenna element is sufficient. If the aim is to provide two or more services or one service more than once, or if the aim is, for example, to communicate in various frequency bands in the mobile radio range, then, of course, two or more antenna elements are provided, which are offset with respect to one another or are flat.
  • the exemplary illustrative non-limiting technology herein provides a further improved antenna arrangement which, in principle, has good antenna characteristics with reduced production and material costs overall.
  • one or more printed circuit boards are used, which are preferably aligned alongside one another vertically on a common plane and are provided adjacent to the at least one antenna element.
  • the appropriate components for a radio-frequency circuit which may possibly be provided, are, for example, accommodated on this vertically aligned printed circuit board.
  • the use of a vertically aligned printed circuit board once again allows the overall design of a corresponding antenna arrangement to be simplified considerably.
  • One surprising feature of this illustrative non-limiting implementation is that the vertically aligned printed circuit board, which rests on the antenna element at the side, does not influence the antenna polar diagram disadvantageously in the manner which would intrinsically be expected.
  • One exemplary illustrative non-limiting implementation provides at least one antenna element arrangement that is not provided above the printed circuit boards but at the side, alongside this at least one printed circuit board. This prevents any disadvantageous influence on the polar diagram characteristic. This is also particularly surprising, and is not obvious, because an antenna such as this with as broad a bandwidth as possible for the mobile radio field is designed for wavelengths in the range from around 15 cm to 30 cm, so that the size of the vertically arranged printed circuit board is in the range that is relevant for these wavelengths.
  • whip antenna implementations may have a vertically running, flat antenna section, which merges at the top into, for example, an antenna section at the rear.
  • a further antenna element is intended to be provided for a second frequency band for the mobile radio area, or in order to provide further services, then this likewise can preferably be provided as a flat antenna element in an area of the printed circuit board that is offset with respect to the first antenna element.
  • a further printed circuit board element which is located on the same plane as the first printed circuit board element or, for example, is offset laterally parallel to it, in order to accommodate the at least one further antenna element here.
  • the antenna elements and the radio-frequency circuit which may possibly be provided can be accommodated in a preferred manner on a single, common printed circuit board arrangement.
  • a cap which is used for mechanical retention, is required only for installation on the motor vehicle and for mechanical anchoring of the printed circuit board and of the antenna elements located on it.
  • FIG. 1 is a schematic side illustration of an antenna arrangement with a printed circuit board side mounted on a common plane in the vertical direction;
  • FIG. 1 a is an exemplary illustrative non-limiting arrangement corresponding to FIG. 1 , provided with roof mounting;
  • FIG. 1 b shows an exemplary illustrative non-limiting arrangement in which the antenna arrangement is mounted with a modified base at the upper edge of a rear windshield;
  • FIG. 2 is a schematic perspective illustration of the exemplary illustrative non-limiting arrangement shown in FIG. 1 ;
  • FIG. 3 is a side illustration of a further modified exemplary illustrative non-limiting arrangement of a printed circuit board with an antenna element located thereon.
  • FIG. 1 is a schematic side illustration of an exemplary illustrative non-limiting implementation of a motor vehicle bodywork plate 1 , for example at the rear end of the roof, at the junction to a rear window 2 , illustrated schematically from the side.
  • a cap plate or base plate 7 with a printed circuit board 5 that is aligned vertically with respect to it and has electrically conductive surface sections 9 ′ on it is mounted from underneath on the bodywork plate 1 , thus forming an antenna element arrangement 9 .
  • the flat elements 9 ′ are in this case normally aligned in the vehicle longitudinal direction.
  • the entire antenna element arrangement 9 is normally fitted on the line of symmetry of the motor vehicle.
  • the antenna element arrangement 9 (starting from the lower cap plate or base plate 7 which is arranged essentially horizontally or at a slight angle to the horizontal on the motor vehicle bodywork plate 1 ) comprises a vertically running first flat section 9 ′, to which a whip antenna section 9 ′′, which extends to the rear, can then be connected.
  • both antenna sections 9 ′ and 9 ′′ are electrically connected to one another via a combination comprising an inductance and capacitance 13 .
  • a printed circuit board 15 is provided on the same plane, directly adjacent to the antenna element arrangement 9 , that is to say in the illustrated exemplary illustrative non-limiting arrangement in the same vertical plane on the first antenna element section 9 ′ which extends vertically, on which the radio-frequency circuit of the antenna arrangement, which may possibly be provided, is accommodated.
  • all of the necessary electrical components and assemblies, filter modules, etc. are seated on this printed circuit board section 15 .
  • the corresponding connecting cables can then be introduced into the motor vehicle interior through an opening 16 , which may possibly be provided in the cap plate or base plate 7 .
  • FIG. 2 shows a corresponding illustrative exemplary non-limiting arrangement once again, illustrated schematically in perspective form, showing the three spatial coordinates X, Y and Z, in order to illustrate the perspective.
  • the entire arrangement is provided on a common printed circuit board 15 .
  • the flat antenna element 9 with the two flat antenna element sections 9 ′, 9 ′′ and the combination comprising the inductance and capacitance 13 is provided on this common printed circuit board 15 , running in the motor vehicle direction.
  • this motor vehicle direction is on the front side 17 on the left.
  • the flat antenna element 9 is formed for example by means of appropriate metalization formed on the printed circuit board 15 .
  • the radio-frequency circuit which may possibly be provided is then in turn accommodated, with the appropriate components and parts, in a space 15 ′ which, for example, is bounded by a rectangular shape.
  • a second antenna element arrangement 29 for example in the form of a metalized surface, is also provided on the common, vertically aligned printed circuit board 15 , in the rear area 18 of the printed circuit board 15 .
  • the radio-frequency circuit which may possibly be provided for the two antenna element arrangements 9 , 29 in the printed circuit board section 15 ′ is accommodated on the common printed circuit board 15 between the two antenna element arrangements 9 , 29 .
  • the antenna element arrangements 9 and 29 may be formed separately from the printed circuit board 15 .
  • the printed circuit board 15 will preferably be located aligned vertically immediately at the side between the two antenna element arrangements 9 , 29 .
  • the entire arrangement is held mechanically by means of the cap or the so-called base plate 7 .
  • certain sections on the printed circuit board 15 may also be omitted or knocked out, if, for example, it is intended to accommodate an antenna element there which, in contrast to the illustrated exemplary illustrative non-limiting arrangement, is not aligned vertically, for example in the case of a GPS antenna.
  • the printed circuit board 15 may thus have apertures or knocked-out sections in order to accommodate additional antenna elements in that area.
  • FIG. 1 a a further FIG. 1 a is also illustrated.
  • the exemplary illustrative non-limiting arrangement shown in FIG. 1 a relates to roof mounting.
  • the cap plate or base plate 7 is thus generally flush mounted on the bodywork roof from above on the bodywork plate 1 , so that the cap plate or base plate 7 covers the opening 3 .
  • the exemplary illustrative non-limiting implementation shown in FIG. 1 b uses a different type of base plate or cap plate 7 , by means of which the antenna arrangement can also be mounted on a glass pane, for example on a rear windshield of a motor vehicle, preferably at the upper edge in the vicinity of the junction with the bodywork roof.
  • An appropriate protective shroud which is not illustrated in any more detail, is also fitted in all cases, and covers and protects the entire illustrated antenna arrangement.

Landscapes

  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)
  • Lens Barrels (AREA)
  • Body Structure For Vehicles (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)
  • Aerials With Secondary Devices (AREA)
  • Photovoltaic Devices (AREA)
US10/499,363 2002-05-16 2003-05-08 Roof antenna for motor vehicles Expired - Lifetime US7193572B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE10221877A DE10221877A1 (de) 2002-05-16 2002-05-16 Antennenanordnung
DE10221877 2002-05-16
DE10221877.3 2002-05-16
PCT/EP2003/004843 WO2003098735A1 (de) 2002-05-16 2003-05-08 Antennenanordnung

Publications (2)

Publication Number Publication Date
US20050062658A1 US20050062658A1 (en) 2005-03-24
US7193572B2 true US7193572B2 (en) 2007-03-20

Family

ID=29432134

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/499,363 Expired - Lifetime US7193572B2 (en) 2002-05-16 2003-05-08 Roof antenna for motor vehicles

Country Status (8)

Country Link
US (1) US7193572B2 (enExample)
EP (1) EP1504491B2 (enExample)
JP (1) JP4199189B2 (enExample)
AT (1) ATE319198T1 (enExample)
AU (1) AU2003239853A1 (enExample)
DE (3) DE20221959U1 (enExample)
ES (1) ES2256746T3 (enExample)
WO (1) WO2003098735A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9966659B2 (en) 2012-05-16 2018-05-08 Continental Automotive Gmbh Antenna module having a transmitting and receiving antenna element

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080117111A1 (en) * 2006-11-22 2008-05-22 Nippon Antena Kabushiki Kaisha Antenna Apparatus
US8081126B2 (en) 2006-11-22 2011-12-20 Nippon Antena Kabushiki Kaisha Antenna apparatus
DE102007055323B4 (de) * 2007-11-20 2013-04-11 Continental Automotive Gmbh Finnenförmiges Multiband Antennenmodul für Fahrzeuge
DE102009038038B4 (de) * 2009-08-19 2022-08-11 Bayerische Motoren Werke Aktiengesellschaft Antennenanordnung für ein Kraftfahrzeug und Kraftfahrzeug
DE102009041166B4 (de) * 2009-09-11 2020-03-05 Bayerische Motoren Werke Aktiengesellschaft Fahrzeugantenne zum Empfang und/oder zum Senden von Funksignalen
US8537062B1 (en) 2010-09-30 2013-09-17 Laird Technologies, Inc. Low-profile antenna assemblies
US8519897B2 (en) 2010-09-30 2013-08-27 Laird Technologies, Inc. Low-profile antenna assembly
JP5920122B2 (ja) 2012-09-03 2016-05-18 株式会社デンソー 車載用アンテナ装置
JP6206243B2 (ja) * 2014-02-21 2017-10-04 株式会社Ｓｏｋｅｎ 集合アンテナ装置
EP4071931A1 (en) * 2016-02-19 2022-10-12 Yokowo Co., Ltd Antenna device
FR3050075B1 (fr) * 2016-04-12 2020-03-06 Valeo Comfort And Driving Assistance Module d'antenne(s) pour vehicule automobile comprenant un capot exterieur de protection et un boitier antenne
DE102017220732A1 (de) * 2017-11-21 2019-05-23 Ford Global Technologies, Llc Kraftfahrzeug mit einem Glasdach und mit einer auf diesem Glasdach aufsitzenden Antennenanordnung

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AU2003239853A1 (en) 2003-12-02
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EP1504491B1 (de) 2006-03-01
ATE319198T1 (de) 2006-03-15
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US20050062658A1 (en) 2005-03-24
WO2003098735A1 (de) 2003-11-27

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